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FCLOSEALL(3) Linux Programmer's Manual FCLOSEALL(3)

NAME

     fcloseall - close all open streams

SYNOPSIS

     #define _GNU_SOURCE         /* See feature_test_macros(7) */
     #include <stdio.h>

     int fcloseall(void);

DESCRIPTION

     The  fcloseall()  function  closes  all  of  the calling process's open
     streams.  Buffered output for each  stream  is  written  before  it  is
     closed (as for fflush(3)); buffered input is discarded.

     The standard streams, stdin, stdout, and stderr are also closed.

RETURN VALUE

     This  function  returns  0  if  all  files were successfully closed; on
     error, EOF is returned.

ATTRIBUTES

     For  an  explanation  of  the  terms  used   in   this   section,   see
     attributes(7).

     +------------+---------------+------------------------+
     |Interface   | Attribute     | Value                  |
     +------------+---------------+------------------------+
     |fcloseall() | Thread safety | MT-Unsafe race:streams |
     +------------+---------------+------------------------+
     The  fcloseall()  function  does  not  lock  the  streams, so it is not
     thread-safe.

CONFORMING TO

     This function is a GNU extension.

SEE ALSO

     close(2), fclose(3), fflush(3), fopen(3), setbuf(3)

COLOPHON

     This page is part of release 4.16 of the Linux  man-pages  project.   A
     description  of  the project, information about reporting bugs, and the
     latest    version    of    this    page,    can     be     found     at
     https://www.kernel.org/doc/man-pages/.

GNU 2017-09-15 FCLOSEALL(3)